410 ANTIENT METAPHYSICS. BookV. 



CHAP. V. 



Of Propofttions, ivhofe SubjeB is an Individual Thing — Individual 

 Things either Material or Immaterial ^OJ Propofitions^ ivhofe 

 SubjeSl is a Corporeal Thing — Of thefe there can be no Science — Na- 

 ture of our Knovuledge of Corporeal Things — Ufe of that Know- 

 ledge, 



TH U S, I have finifhed what I have to fay upon what may be 

 called ideal propofitions, that is, propofitions of which both the 

 terms are ideas, and have fhown what the nature of truth is, both 

 felf -evident and fyllogiftical, in fuch propofitions. I now proceed to 

 the propofitions of the other kind, concerning particular or individual 

 things, of which only the greater term or praedicate is an idea; for 

 that 1 have fhown to be neceffary in all propofitions. 



All particular things are either material or immaterial, that is, either 

 body or mind ; and I will begin with propofitions of which the fub- 

 jed: is corporeal. Now, of fuch fubjeds, it is impoffible there can be 

 any fcience or demonftration, for the following reafons. 



Firji^ Thefe fubjeds are, as I have (hown, in a continual flux, 

 and perpetually changing their ftaie ; fo that what is affirmed or de- 

 nied of them, may ceafe to be true, before the enunciation is made. 

 Now, as fcience is fomething fixed and permanent, and the truths of 



it 



